What is the computed number for how well an item distinguishes between the "knowing"

The 19th Century __________ party platform was opposed to the spread of slavery, promoted preservation of the union, supported the abolition of slavery, and promoted post civil was reconstruction.

Fill in the blank(s) with the appropriate word(s).

In order to be qualified to vote in Texas, one must meet all of the following qualifications ?EXCEPT

A) be 18 years of age on Election Day. B) be a citizen of the United States. C) be a registered voter for at least 30 days prior to the election. D) be a two-year resident of the state.